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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Tree Demo</title>
	<script type="text/javascript" src="javascript/utils.js"></script>
	<script type="text/javascript">
	var sb=new StringBuffer('abcd').append('----');
	sb.append('efg').append('higj');
	alert(sb.toString());
	</script>
</head>
<body>
</body>
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